TIMKEN 3872 Roller Bearing Cone For Tapered Roller Bearing Assembly

TIMKEN 3872 is a 1.3750 in bore, single-row tapered roller bearing cone designed for heavy-duty industrial power transmission. It provides robust support in tapered roller bearing assemblies for equipment such as industrial gearboxes, conveyors, mining equipment, construction machinery, and agricultural machinery where combined radial and axial loads must be managed. Key dimensions include an inner ring width of 1.1875 in (30.163 mm), a maximum shaft fillet radius of 0.140 in (3.600 mm), a weight of 2.0 lb (0.9 kg), and a stamped-steel cage with a Timken 3820 compatible cup. Dynamic radial load ratings are C1 = 27,900 lbf (124,000 N) and C90 = 7,240 lbf (32,200 N), static radial load rating C0 = 33,200 lbf (148,000 N), dynamic thrust load rating Ca90 = 4,980 lbf (22,200 N), and a K factor of 1.45. Common replacements include SKF 3872, NTN 3872, and KOYO 3872.